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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2019 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import Foundation
extension Process {
enum TibsProcessError: Error {
case nonZeroExit(TerminationReason, Int32, stdout: String?, stderr: String?)
case invalidUTF8Output(Data)
}
/// Runs a subprocess and returns its output as a String if it has a zero exit.
static func tibs_checkNonZeroExit(
arguments: [String],
environment: [String: String]? = nil
) throws -> String {
let p = Process()
let out = Pipe()
let err = Pipe()
if #available(macOS 10.13, *) {
p.executableURL = URL(fileURLWithPath: arguments[0], isDirectory: false)
} else {
p.launchPath = arguments[0]
}
p.arguments = Array(arguments[1...])
if let environment = environment {
p.environment = environment
}
p.standardOutput = out
p.standardError = err
if #available(macOS 10.13, *) {
try p.run()
} else {
p.launch()
}
let dataOut = out.fileHandleForReading.readDataToEndOfFile()
let dataErr = err.fileHandleForReading.readDataToEndOfFile()
p.waitUntilExit()
if p.terminationReason != .exit || p.terminationStatus != 0 {
throw TibsProcessError.nonZeroExit(
p.terminationReason, p.terminationStatus,
stdout: String(data: dataOut, encoding: .utf8),
stderr: String(data: dataErr, encoding: .utf8))
}
guard let str = String(data: dataOut, encoding: .utf8) else {
throw TibsProcessError.invalidUTF8Output(dataOut)
}
return str
}
}
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